Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Robert F. Dymek"'
Autor:
Robert F. Dymek, Brent E. Owens
Publikováno v:
The Canadian Mineralogist. 54:1563-1593
The Montpelier and Roseland plutons are the southernmost, and among the youngest and smallest, examples of massif anorthosite in North America. They occur in separate lithotectonic terranes, but strong similarities between them suggest common factors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82948b4b972bc4d9e56b28ee117e655e
https://doi.org/10.3749/canmin.1600002
https://doi.org/10.3749/canmin.1600002
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9befff06d3acae14640d093512b1df07
https://doi.org/10.1130/abs/2018am-319443
https://doi.org/10.1130/abs/2018am-319443
Autor:
Simon L. Harley, Jan C.M. De Hoog, Edward S. Grew, Robert F. Dymek, Robert M. Hazen, Jeremy Boak, Martin G. Yates
Publikováno v:
Geochimica et Cosmochimica Acta. 163:156-177
Boron is highly concentrated in Earth’s crust relative to primitive mantle. However, when present-day crustal concentrations were achieved remains debatable. It has been proposed that seawater boron δ11B was lower than at present, consistent with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd3e3a7bfe9749555fb0f7b46d4d56e1
https://doi.org/10.1016/j.gca.2015.04.045
https://doi.org/10.1016/j.gca.2015.04.045
Publikováno v:
Geosphere. 6:855-899
Geochemical data for a comprehensive suite of over 700 samples of massif anorthosite and associated rocks from the Adirondack Mountains, New York, exhibit a ubiquitous mixed tholeiitic and calc-alkaline signature indicating a complex petrogenesis. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9e01b8eeced7956e9ddb7146ef3839f
https://doi.org/10.1130/ges00550.1
https://doi.org/10.1130/ges00550.1
Publikováno v:
American Mineralogist. 95:73-80
Jimthompsonite and chesterite occur as intergrowths within anthophyllite up to a few millimeters across in talc-magnesite schist from the ~3800 Ma Isua Supracrustal Belt, West Greenland. Pyribole lamellae span the entire intergrowth width and have th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1284ebe9367f82c506e680ae1ed310b
https://doi.org/10.2138/am.2010.3212
https://doi.org/10.2138/am.2010.3212
Autor:
Brent E. Owens, Robert F. Dymek
Publikováno v:
Canadian Journal of Earth Sciences. 42:1699-1718
We present new field observations and laboratory data confirming the presence of the Mattawa Anorthosite Massif (MAT), whose existence in south-central Quebec was hinted at more than 35 years ago. MAT thus represents a newly recognized member of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af998592659f8d4b627f7835e0367822
https://doi.org/10.1139/e05-073
https://doi.org/10.1139/e05-073
Autor:
Robert F. Dymek, Brent E. Owens
Publikováno v:
Journal of Petrology. 42:1519-1546
The Labrieville massif (>1010 Ma) is an eroded dome consisting mineral—plagioclase feldspar. The circumstances whereby such nearly monomineralic plutons can be produced of three zones: (1) a foliated inner core of pink anorthosite (>An30Or13, >2100
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40efd38ee174ec8213cde8ac0e2a647f
https://doi.org/10.1093/petrology/42.8.1519
https://doi.org/10.1093/petrology/42.8.1519
Autor:
Robert F. Dymek, Brent E. Owens
Publikováno v:
Contributions to Mineralogy and Petrology. 141:513-528
We report whole-rock, major- and trace-element compositions (obtained by XRF and INA methods) for the amphibolite-facies Buksefjorden and granulite-facies Nordland anorthosites, SW Greenland. In a previous petrologic study on the same sample suite, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce5278e8da93ab9d2bdd42c5c02616bd
https://doi.org/10.1007/s004100100264
https://doi.org/10.1007/s004100100264
Autor:
Robert F. Dymek, Brent E. Owens
Publikováno v:
Economic Geology. 96:797-815
We report field, petrographic, mineralogical, and geochemical data for two P-rich rock types of the anorthosite suite—Fe-Ti oxide-apatite rock (or nelsonite) and Fe-Ti oxide-apatite gabbronorite (or oxide-apatite gabbronorite). These rocks are take
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6373d3dc2df5ec392fab3b9841d84ad
https://doi.org/10.2113/gsecongeo.96.4.797
https://doi.org/10.2113/gsecongeo.96.4.797
Publikováno v:
Lithos. 42:191-212
Mafic orthopyroxene monzodiorite (jotunite) lithologies are exposed in the St. Urbain plutonic suite as a marginal facies to quartz mangerite and massif anorthosite intrusive bodies and as dikes within a variety of host rocks. High concentrations of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4ce275b10a61626eb28a5bf523894ec
https://doi.org/10.1016/s0024-4937(97)00042-x
https://doi.org/10.1016/s0024-4937(97)00042-x